User's Manual

1-4
Chapter 1: Product introduction
To erase the RTC RAM:
1. TurnOFFthecomputerandunplugthepowercord.
2. Useametalobjectsuchasascrewdrivertoshortthetwopins.
3. PlugthepowercordandturnONthecomputer.
4. Holddownthe<Del>keyduringthebootprocessandenterBIOS
setup to re-enter data.
Ifthestepsabovedonothelp,removetheonboardbatteryandshortthetwopinsagainto
cleartheCMOSRTCRAMdata.AfterclearingtheCMOS,reinstallthebattery.
CLRTC
+3V_BAT GND
PIN 1
• HarddiskdriveactivityLED(2-pinHDD_LED)
This2-pinconnectorisfortheHDDActivityLED.Connect
theHDDActivityLEDcabletothisconnector.TheHDDLED
lightsuporasheswhendataisreadfromorwrittentothe
HDD.
• Systemwarningspeaker(4-pinSPEAKER)
This4-pinconnectorisforthechassis-mountedsystem
warning speaker. The speaker allows you to hear system
beeps and warnings.
• ATXpowerbutton/soft-offbutton(2-pinPWR_SW)
This connector is for the system power button.
• Resetbutton(2-pinRESET)
This 2-pin connector is for the chassis-mounted
reset button for system reboot without turning off the
system power.
PLED+ PLED- PWR Ground +5V_SPKO Ground Ground Speaker
HDD_LED+
HDD_LED-
Ground
RESET
NC
PLED+
PLED-
PIN 1
+PWR_LED-
+PWR_LED-
SPEAKER
PANEL
+HDD_LED-
PWR_SW
RESET
* Requires an ATX power supply
8. USB 2.0 connectors (10-1 pin USB34/56/78)
TheseconnectorsareforUSB2.0ports.ConnecttheUSBmodule
cabletoanyoftheseconnector,theninstallthemoduletoaslot
openingatthebackofthesystemchassis.TheseUSBconnectors
complywithUSB2.0specicationsandsupportsupto480Mbps
connection speed.
Neverconnecta1394cabletotheUSBconnectors.Doingso
will damage the motherboard!
USB+5V USB_P3- USB_P3+ GND NC
USB+5V
USB_P4-
USB_P4+
GND
USB34
PIN 1
9. Clear RTC RAM (2-pin CLRTC)
ThisheaderallowsyoutocleartheRealTimeClock(RTC)RAMinCMOS.Youcan
cleartheCMOSmemoryofdate,andsystemsetupparametersbyerasingtheCMOS
RTCRAMdata.TheonboardbuttoncellbatterypowerstheRAMdatainCMOS,which
include system setup information such as system passwords.